Add or remove . Viewing 8 replies - 1 . Header set Cache-Control "max-age=86400, public, must-revalidate". Cache-Control max-age - TechBridge . Cache-Control is an important HTTP header that allows you to define various directives letting browsers know how an asset should be cached. Also, Cache-Control is http/1.1 standard and Expires is http/1.0. The .htaccess file provides a way to give instructions to the Apache and compatible web servers. Thread Starter longzg (@longzg) 1 week, 2 days ago. More. <FilesMatch ". According to the Google Developers site, Cache-Control headers are all we need: The Cache-Control header was defined as part of the HTTP/1.1 specification and supersedes previous headers (for example, Expires) used to define response caching policies. Browse other questions tagged apache-2.2.htaccess or ask your own question. Header set Cache-Control "max-age=2700" </FilesMatch> </ifModule> Cache-Control Header - Cache-control header uses maximum age for the resources before expiring. Cache-Control: max-age=<seconds> This directive tells the browser or intermediary cache how long the response can be used from the time it was requested. Almost all website especially wordpress websites are caching their static files: Header set Cache-Control "max-age=2592000" # year The cache MUST attach Warning 113 to any response whose age is more than 24 hours if such warning has not already been added. This can be configured via the .htaccess file in the website's directory . 1 Cache-control: max-age=[secs] Expires [secs]cache Cache-control: max-age=1800 cache,HTTPcache . My Questions over here are : Why am I getting Cache-Control: max-age=0 on the server side ? For Apache web servers, the best solution is to edit .htaccess to disable caching. unset Cache-Control Header unset Last-Modified Header set Pragma "no-cache" Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate" Header set Expires "Thu, 1 Jan 1970 00:00 . Just add the following directives to your site's root .htaccess file: . Common reasons for not wanting caching on a viewer's internet browser include: Constantly updated data that you do not want to be cached (e.g. The Cache-Control: max-age is calculated by subtracting the request time from the expiration date and expressing the result in seconds. I don't want to completely unset Cache-Control, though -- just want to get rid of max-age. If you don't set your Cache-Control for the HTTP headers, then, you will have a longer wait times when visiting your website. The following snippet can be added to your .htaccess file to tell the server to set the Cache-Control header's max-age to 84600 seconds and to public for the listed files. stale revalidate . The Overflow Blog Software is adopted, not sold (Ep. Hier ist mein .htaccess fr Cache <filesMatch ". . All max-age values are in seconds, e.g. <Directory "C:\somedir\cache"> Header unset Last-Modified . In the example the max-age is the time in seconds with 2628000 being 1 month. Whereas if you enable the option for adding browser cache rule for static files in the plugin settings it will add max-age of 604800 for CSS/JS as these files gets updated often and then for others it's actually 1 year. However, you can adjust these values in your .htaccess file as needed: # BEGIN Expire headers <IfModule mod_expires.c> # Turn on the module. This module controls the setting of the Expires HTTP header and the max-age directive of the Cache-Control HTTP header in server responses. OK, thank you very much. Header set Cache-Control "max-age=7200, must-revalidate". ExpiresDefault "access plus 2 days" ExpiresByType image/jpg "access . #Header set Cache-Control "max-age=0, public, must-revalidate". one month equals: 60 (seconds in a minute) x 60 (minutes in an hour) x 24 (hours in a day) x 30 (average number of days in a month) = 2592000 Add or remove . Apache can define an expire time for cached data as well. Specifying no-cache or max-age=0 indicates that clients can cache a resource and must revalidate . Check the .htaccess file of your site, maybe they are being added by the hosting company. Header set Cache-Control "max-age=7200, must-revalidate". Search engine will rank your website higher if your website response time is faster. For example, if an asset has a large max-age, then the asset can be retrieved from the browser for a long period of time without making a request to the server. ExpiresActive on # Set the default expiry times. . Browse other questions tagged apache-2.2.htaccess or ask your own question. Header set Cache-Control "max-age=172800, public, must-revalidate". File caching is another famous approach in optimizing website loading time. . hans2103 / .htaccess-mod_headers. Pragma Header unset Cache-Control Header unset Last-Modified Header set Pragma "no-cache" Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate" Header set . This is the code I use in .htaccess file: <FilesMatch "\. The file types I mentioned should have an expire date of 2 hours, but after hard refresh I see that all these files have an . (flv|gif|jpg|jpeg|png|ico|swf|js|css|pdf)$"> Header set Cache-Control "max-age=2592000" </FilesMatch> For files with these extensions in the FilesMatch construct you will set the Cache-Control header given by the server and the max-age variable, in which the time of storing files in the cache in seconds is specified. The following snippet can be added to your .htaccess file or Apache configuration file to tell the server to set the Cache-Control header's max-age to 31536000 seconds, as well as the directives public and immutable for the listed file extensions. This goes in your root .htaccess file but if you have access to httpd.conf that is better. < / IfModule>. . Header set Cache-Control "max-age=2592000, public". Google Developers website Keep in mind, if you use a far future Expires header you have to change the component's filename whenever the file changes. Common reasons for not wanting caching on a viewer's internet browser include: . Header set Cache-Control "max-age=2700" </FilesMatch> </ifModule> Cache-Control Header - Cache-control header uses maximum age for the resources before expiring. Header set Cache - Control "max-age=2592000". I don't want to completely unset Cache-Control, though -- just want to get rid of max-age. (flv|gif|jpg|jpeg|png|ico|swf|js|css|pdf)$"> Header set Cache-Control "max-age=2592000" </FilesMatch> For files with these extensions in the FilesMatch construct you will set the Cache-Control header given by the server and the max-age variable, in which the time of storing files in the cache in seconds is specified. This is because some of the files shouldn't be cached such as HTML and text any changes made to the copy on a website should be immediate, so we don't cache them. Mod Expires . .htaccess rules to set cache control. You can put this directive in the root of your configuration to apply site-wide . So please add must-revalidate to your Cache-Control header for your .html files. Soll ich das auch hinzufgen? Quick .htaccess snippet to disable browser caching by modifying Cache-Control, Pragma, and Expires headers. So the following would be wrong: Header . 441) An . For Apache web servers, the best solution is to edit .htaccess to disable caching. Thread Starter longzg (@longzg) 441) An . Cache-Control FilesMatch Cache-Control max-age Header set Cache-Control "max-age=86400, public, must-revalidate". no-cache max-age=0 revalidate . You can put this directive in the root of your configuration to apply site-wide, but a better method is to apply the settings depending on the type of file. The base time is either the last modification time of the file, or the time of the client's access to the document. . In the header response, I want to remove Cache-Control's "max-age"? Here is an example of an Apache .htaccess configuration that sets caching for various image file types, as matched by an extension list, to one month and public access (some available options are discussed below). I have a problem setting the cache expire date on my website. (3) When the max-age expires, I send the request again: this is what I listen on the server side: and this is what I gather on the client side, using wire-shark. CDN cache control Cache Control Cache-Control: no-cache Cache-control must-revalidate Expires headers HTML no cache header example HTML no-cache HTML5 header no cache Js cache Pragma no-cache cache-control max-age cache-control no-cache cache-control no-store html cache-control html cache-control no-cache What this does is adding far future expires header (make sure mod_expires is loaded in your apache config if you have problems) to your static content (images, js, css, etc). <filesMatch ". Add Cache-Control Headers. You can cache the static files and improve your website's performance. Copy code. hans2103 / .htaccess-mod_headers. Cache-Control max-age ApacheCache-Controlmax-age Cache-Controlmax-age; Access-Control-Max-AgeCache-Control; Java Spring Cache-control; max-age; headless chrome driverCache-control I decided to put all my cache-able content under a single root directory and edit the httpd.conf as. (css|jpg|jpeg|png|gif|js|ico)$"> Header set Cache-Control "max-age=2628000, public" </filesMatch> Mein Ziel ist es, dass Updates vollstndig wiedergegeben werden, sobald Sie auf die Website gehen oder sogar auf den Website-Link bei Google klicken. NGINX or Cloudflare proxy servers) .htaccess rules to set cache control. Header set Cache-Control "max-age=2628000, public" </filesMatch> Note: The file extensions shown is an incomplete list. You can change the Varnish cache for static items like files by adding a custom .htaccess file to any desired . Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate" If none of Expires, Cache-Control: max-age, or Cache-Control: s- maxage appears in the response, and the response does not include other restrictions on caching, the cache MAY compute a freshness lifetime using a heuristic. This cache can be controlled by configuring your Cache-Control HTTP headers for your website This is done by adding mod_expires in the .htaccess file of your server. The expiration date can set to be relative to either the time the source file was last modified, or to the time of the client access. We explicitly set the expiry time to A0 (zero) and set the Cache-Control to "no-store, no-cache, must-revalidate, max-age-0", forcing the browser never to store the file . The Cache Control (D7) module provides you with the additional ability to set max-age headers on a page-by-page basis. <FilesMatch ". Cache-Control: max-age=604800 = , . . : Accept-Ranges bytes Cache-Control max-age=600 Connection close Content-Length 10978 Content-Type text/css Date Thu, 16 Aug 2012 15:02:52 GMT Expires Thu, 16 Aug 2012 15:12:52 GMT Last-Modified Thu, 29 Mar 2012 12:57:09 GMT Server nginx/0.8.55 Expires and Cache-Control headers can also be included with Apache by using the mod_expires module. But, some files such as CSS and JS have cache control: max-age = 315360000, while some files such as PNG and SVG have cache control: max-age = 604800 . The max-age=N request directive indicates that the client allows a stored response that is generated on the origin server within N seconds where N may be any non-negative integer (including 0).. Cache-Control: max-age=3600 In the case above, if the response with Cache-Control: max-age=604800 was generated more than 3 hours ago (calculated from max-age and the Age header), the cache couldn . More. In Apache, you'll have to set this header manually using the Header set directive, like so: Header set Cache-Control "max-age=84600, public". The max-age value is set in seconds, for example, max-age=300 for a five-minute TTL, and max-age=63072000 for two years. < / FilesMatch>. ExpiresActive on # Set the default expiry times. HeadersetCache-Control "max-age=2678400, private" </FilesMatch> </IfModule> </IfModule> In the example above, you'll see that some of the file types have "0 seconds" cache time. Cache-Control. The Max age (D7) module allows you to control cache ages per content type. Changing max-age time for static files. As you can see, I'm using the exact same file expiration settings in these Cache-Control headers as in the Expires headers example. #Header set Cache-Control "max-age=0, public, must-revalidate". Strictly plug-n-play. By enabling the cache feature in the .htaccess file, the resources of the website get stored on the visitor's browser enabling quick load. stock ticker) Caching structures that you prefer to use server-side (e.g. However, you can adjust these values in your .htaccess file as needed: # BEGIN Expire headers <IfModule mod_expires.c> # Turn on the module. This means faster load times for the user. Two things here: ExpiresDefault A2592000 = 1 month in the future. Cache-Control html / js / images / cssCache-Control max-age=3600, must-revalidateHTTPLast Modified Header /Squid / Akamaimax-age . . All modern browsers support Cache-Control, so that's all you need. Shouldn't I get 200 response after the max-age expires? . Caching instructions are often placed in .htaccess. Caching using .htaccess. By enabling the cache feature in the .htaccess file, the resources of the website get stored on the visitor's browser enabling quick load. (xml|txt|css|js)$"> Header set Cache-Control "max-age=7200, proxy-revalidate" </FilesMatch>. The cache control section that you have in the plugin settings that is only for HTML pages. The following are default settings on DreamHost servers and do not need to be enabled. If both Expires and Cache-Control: max-age exist, Cache-Control has priority so the max-age directive overrides the maximum age specified by the Expires header. Header set Cache-Control "max-age=84600, public" The max-age value is set in seconds, for example, max-age=300 for a five-minute TTL, and max-age=63072000 for two years. This module controls the setting of the Expires HTTP header and the max-age directive of the Cache-Control HTTP header in server responses. The following are default settings on DreamHost servers and do not need to be enabled. In the header response, I want to remove Cache-Control's "max-age"? So the following would be wrong: Header . Then put this .htaccess file in the directory and all files (including it's sub-directories will be cached for 1 year. The Overflow Blog Software is adopted, not sold (Ep. Header set Cache-Control "max-age=172800, public, must-revalidate". (ico|jpg|jpeg|png|gif)$">. The no-cache directive means that a browser may cache a response, but must first submit a validat. What is Cache-Control and How HTTP Cache Headers Work . Apache The following snippet can be added to your .htaccess file to tell the server to set the Cache-Control header's max-age to 84600 seconds and to public for the listed files. This will turn off Etags and turn on cache-control: max-age.